Tool



@et 1'5, 1935. Q Q, CARLSON 2,017,039

TOOL

Filed Nov. 2l, 1954 5 Sheets-Sheet l wedor: CL4/@ENCE O. CHELSON,

Oct. 15, 19315. ci o, CARLSON 2,012039 TOOL Filed Nov. 2l, 1934 3 Sheets-Sheet 2 -ml 55 FW 40 1 [Mey/dor: 5 /4 (Lge/ENCE O. CHELSON,

Oct. l5, 1935. c. o. CARLSON TOOL Filed Nov. 2l,- 1934 3 Sheets-Sheet 3 CL4/@ENCE O. Cee/ 50N Patented Oct. 15, 1935 UNITED STATES PATENT OFFICE ,'rooL `Jersey Application November 21, "11934, .Selial No. 254,156

4 Claims.

invention relates to tools, and more particularly to one which is adapted for rigidly Aconnecting bed spring coils and similar articles to grooved -border wires, `although vnot llimited there- In the manufacture of bed springs and Athe like itiscommon practice to assemble and -interconnect the outside edges or convolutions of spring units to a grooved border wire in which vthey are adapted to seat. The forming of the rigid connection between theseelements `(i. e., the outside convolutions of the spring Aunits and the grooved border wire) has heretofore Vbeen accomplished with considerable diculty by utiliz-ing various types of crimping tools.

It is one of the -objects of the present invention to provide a novel tool for assembling ele- A'ments -of the type referred to in -a very simple `and easy manner.

Another object is the provision of a device `of the class described which may be Yeasily and cheaply manufactured and at the Asame time -prove durable in service.

These and further objects will be apparent after referring to the drawings, in which:

Figure 1 is a -side elevation -of the -novel `tool -of the invention.

Figure 2 Vis a view -similar to Figure 1 but Adisclosing various elements thereof lin a ystage -of its operation.

Figure 3 is a side elevation of the elements -of the tool in another stage of operation.

Figure `4. is an enlarged sectional eleva-tion of vthe tool in -a third stage of its operation.

Figure 5 is a sectional -view on the line -V--V of Figure 2.

-Figure 6 isla sectional view onthe line VI--VI of Figure 2.

Figures '7 and V8 are, respectively, a fragmentary sectional elevation and -a fragmentary plan, showing the manner in which the tool 'functions to rigidly connect the outside convolution of a spring -unit to a grooved border wire.

Referring more particularly to `the drawings. thenumeral 2 designates a stationary lever which -is .provided adjacent its lowerextremity 3 with a cylindrical boss 4. A relatively short lever 5 is provided adjacent its lower .extremity I6 with a cylindrical boss l which is adapted to `intermesh with the cylindrical boss-470i the stationary lever 2 .and to rbe secured thereto in pivotal :relationship with v.a pin 8. VThe lower extremities i3 and 6 vof `the `levers 2 and 45, respectively, are each provided on their adjacent surfaces vwith ra wedgeshaped recess 9 .in each of which there 'is .dis-

(Cl. L10-55) posed la projecting Ypin I0. A die |2 is adapted fordisposal in-each of the wedge-shaped recesses 4-9 andeach has -a `lower inclined side wall i4 for engagement with the lower side Walls of the latter. The dies f|2 are beveled on their upper adjacent edges, as at l5, and each has a vertical -slot \|5 -to accommodate -one of the pins I0 and restrain itself against longitudinal movement.

A Wedge 17, -having an inclined wall I8, is disposed in each of the lwedge-shaped recesses 9 for maintaining the dies |2 rigidly therein.

A movable 'operating -lever 20 is pivotally connected as at 2| to a link 22, the other end of which -is connected in a like manner, as shown at 123, to .an intermediate portion -of the Ystationary A`lever'2. This movable operating lever 29 is provided with an offset 24 4adjacent its pivotal con- -nection 2:| to the link 22, which is pivotally connected, as Aat 2-5, to the upper end of the relatively short pivoted lever 5. A sleeve 2l is integrally formed on the intermediate portion of the stationary lever 2 on its side -adjacent the -movable operati-ng lever 20, and the latter 'is provided .in relative `alinement therewith with a screwthreaded aperture 28 in which there is disposed a 4capserew 29. The capscrew '29 is adapted to abut the -sleeve 421'1 in such manner as to restrain excessive proximity of the stationary lever 2 and Vthe movable operating lever 20, and is locked in adjusted position by means of a nut 35.

The stationary lever 2 carries an offset 3| immediately below -the pivotal connection 23 of the link 22, and has formed therein a slot 32. This provides -a pair of ears 33 in each of which there is provided Iavertically extending slot 34. A bell- Icrank lever 35 is disposed `with one of its arms lextending through vthe slot 32 and has at the `jointureof its arms Aanaperture 36 through which a pin 31 extends -to -seat in either side in the ver- 'tically disposed slots 34 inthe offset 3| of the 40 `stationary lever 2.

A bell-crank vlever 38 is-pivotally connected, as -at 39, adjacent the upper extremity of the stationary lever 2. This bell-crank lever 38 ispro- 'vided -with an upward extension 40. provided with ra relatively adjustable sleeve 42 `which is pivotallyconnectedas at-43, to the bellcrank lever 38and carries on its other Vend a clevis L44 which is pivotally connected, as at 45, to the upper end of @the bell-crank lever 35.

The flower portion, or arm, of the vbell-crank -lever35 is-ofsubstantial channel-shape, as shown at `45, for nesting over the lower extremity 3 yof :the stationary lever 2. Thischannel-.shaped por- Arod 4| is 455 tion dofthe-bell-crank lever -35 is provided on 5'5 The stationary lever 2 and the relatively short y pivoted lever 5 are each provided immediatelyv above their cylindrical bosses 4 and l, respectively, with an abutment 49 to limit the excessive rotation thereof. f

Referring to Figures l7 and 8 of the'drawings, the numeral 52 designates a border wire having formed therein a groove 53 in which it is desired to rigidly maintainthe outside convolution 54 of a spring unit generally indicated at 55.

In order to facilitate the crimping of the stationary lever 2 and the movable operating lever 25, their upper extremities are provided with handle portions 55.

In operation, the lower extremities 3 and 6 of the stationary lever 2 and the pivoted lever 5, respectively, are disposed over the border wire 52 as shown in Figure 1. V'Ihe outside convolution 55 of a spring unit 55 is disposed in the groove 5.. in the border wire 52 and held in such position by means of the lower inward extension 41 of the substantially channel-shaped portion 46 of the bell-crank lever 35. This is cause-d by the movement of the extension 55 on the upper portion oi the bell-crank lever Vtoward the handle portion 55 on the upperextremity'of the stationary lever 2, which causes the bell-crank lever 35 to be carried upwardly by the upward movement of the pin 3? in the slots 34. 'I'he lower inward exten-V sions l? of the bell-crank lever 33 thus make contact with the inner surface of the outside convolution 54 of the spring unit 55. The movable operating lever 25 is next moved toward the stationary lever 2, thus causing the pivoted lever 5 tomove its lower extremity 5 toward the lower extremity 3 of the stationary lever 2. This movement permits the dies l2 to move in such manner that their beveled upper adjacent edges l5 engage the surface of the border wire 52 adjacent its groove 53.

Due to the movement of these portions of the dies i2, the border wire 52 is deformed in such manner as to partially close the opening ofV the groove 53, thus rigidly maintaining the outside convolution 54 of the spring unit 55 therein. The border wire 52 should be deformed equally on both sides of the groove 53, and this is accomplished by making the wedges I'l of such width that when the lower extremities 3 and 6 of the stationary lever 2 and the pivoted lever 5, respectively, are inrtheir most adjacent positions, the distance between the voutside surfaces of the wedges-is substantially the same as the diameter of the border wire. Y Y

Thus, if one side of vthe border wire oifers less resistance and its crimping is completed before the other, it will come in contact with the surface of the adjacent wedge IL'and preventfurther movement in that direction. This permits the other side to be deformed to the proper degree. In order to accommodate variations in the size of the border wire 52, the size of the outside convolution 54 of the spring unit 55 or the depth of the groove 53' of the border wire 52, the dies l2 may be suitably adjusted, as by shimming,

The tool of the invention has been described in the foregoing specification, for the purpose of convenience, as used in a vertical position, but it is to be understood that it may be used with equal facility in any position, and while I have shown 5 and described one specific embodiment of my invention, it will be understood that I do not wish to be limited exactly thereto, since various modications may be made without departing from the scope of my invention, as dened by the follow- 10 ing claims.

I claim:

1. A tool for rigidly connecting an element to a second element having a deformable groove including, vin combination, a lever, a die member 15 ecured to said lever adjacent one of its extremities, a relatively short lever pivoted to said rst rnamed lever Yadjacent the extremity to which said die is secured, a'die member on said relatively short lever, said last named die being immediately 20 opposite said rst named die member, an operating lever pivotally connected to the end of said relatively short lever which is remote from the extremity to which said second named die member is secured, a link connecting said last named 25 lever to said first named lever, and means for maintaining said first named element in the groove of said second named element while between said die members.

2. A tool for rigidly connecting'an element to a 30 second element having a deformable groove including, in combination, a lever, a die member secured to said lever adjacent one of itsextremities, a relatively short lever pivoted to said rst named lever adjacent the extremity to which said 35v die is secured, a die member on said relatively Vshort lever, said last named die being immediately opposite said first named die member, a operating lever pivotally connected to the end of said relatively short lever which is remote from o the extremity to which said second named die member is secured, a link connecting said last second element having a deformable groove including, Ain combination, a lever, a die member 50 secured to said lever adjacent one of its extremities, a relatively short lever pivoted to said first named lever adjacent the extremity to which said die is secured, a die member on said relatively short lever, said last named die being immediately 55- opposite said rst named die member, an operating lever pivotally connected to the end of said relatively short lever which is remote from the extremity to which said second named die member is secured, a link connecting said last named 60 lever to said first named lever, means for maintaining said first named element in the groove of said second named element while between said die members, and means for moving said last named means into operative position, said moving means 65 being remotely operable from the remote end of said'first named lever.

4. A tool for rigidly connecting an element to a second element having a deformable groove including, in combination, a lever, a die member 70 secured to said lever adjacent one of its extremities, a relatively short lever pivoted to said first named lever adjacent the extremity to which said die is secured, a die member on said relatively .short lever, said last named die being immediately 75 opposite'said first named die member, an operating lever pivotally connected to the end of said relatively short lever which is remote from the extremity to which said second named die member is secured, a link connecting said last named lever to said first named lever, means for maintaining said rst named element in the groove of said secon-d named element While between said die members, means for moving said last named means into operative position, said moving means being remotely operable from the remote end of said rst named. lever, and means for preventing the excessive movement of the lever pivotally connected to said relatively short lever and said rst named lever toward the latter.

CLARENCE O. CARLSON. 

